The easyseed(1) secure BIP 39 mnemonic seed phrase generator. (manpage, forum thread) My original motivation for writing this was that I needed a lightweight, reliable BIP 39 seed phrase generator with easily auditable sources and minimal dependencies for use on a stripped-down airgap machine. Unlike popular Javascript utilities, easyseed(1) reads bits straight off /dev/urandom, or from user-provided keymat. Because gathering and processing of entropy is properly the kernel’s job.